But if there's no heat flowing between these two, ac and no heat flowing between these two then you can't haveheat flowingbetween these two.

那么，这两者,也不会有热量流动。

麻省理工公开课 - 热力学与动力学课程节选

On top of that, there is AC Requirements and a few other things.

另外，还有AC要求和其它一些要求。

伯克利的课程计划 - SpeakingMax英语口语达人

Go to the Mac store which is right nearby Joe's,

ac的专卖店就在Joe's旁边，

无所不有 - SpeakingMax英语口语达人